If one could turn back time, could they win back the love of their life? That is the problem puzzling Stillman, a physics genius recently dumped by his stunning girlfriend Debbie. Therefore, after creating a timeline of their romance and a machine to rewind the past, he grabs his wingman Evan and sets off to right every wrong he made with Debbie. However, as this insane comedy proves, there are some mistakes too perfect for science to fix.